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email_server: aliases: Move sanitizing to form

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Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
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Sunil Mohan Adapa 2021-10-13 16:58:20 -07:00 committed by James Valleroy
parent 19d45514de
commit 6e236a41a8
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1 changed files with 12 additions and 2 deletions
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14
plinth/modules/email_server/forms.py
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@ -2,6 +2,7 @@
""" """
Forms for the email app. Forms for the email app.
""" """
import re
from django import forms from django import forms
from django.core.exceptions import ValidationError from django.core.exceptions import ValidationError
@ -20,11 +21,20 @@ class EmailServerForm(forms.Form):
class AliasCreateForm(forms.Form): class AliasCreateForm(forms.Form):
"""Form to create a new alias.""" """Form to create a new alias."""
alias = forms.CharField(label=_('New alias (without @domain)'), alias = forms.CharField(label=_('New alias (without @domain)'),
max_length=50) min_length=2, max_length=50)
def clean_alias(self): def clean_alias(self):
"""Return the checked value for alias.""" """Return the checked value for alias."""
value = self.data['alias'] value = self.data['alias'].strip().lower()
if not re.match('^[a-z0-9-_\\.]+$', value):
raise ValidationError(_('Contains illegal characters'))
if not re.match('^[a-z0-9].*[a-z0-9]$', value):
raise ValidationError(_('Must start and end with a-z or 0-9'))
if re.match('^[0-9]+$', value):
raise ValidationError(_('Cannot be a number'))
if aliases_module.exists(value): if aliases_module.exists(value):
raise ValidationError('Alias is already taken') raise ValidationError('Alias is already taken')